Unvanquished is a fast-paced, futuristic FPS with RTS elements, pitting technologically advanced humans against hordes of highly adaptable aliens. The player can choose from either team, providing a fresh gameplay experience on both sides of the conflict. The game is under highly active development, with a new alpha release being made at the beginning of each month.
This is definitely one of the best Open Source games out there.
Graphics (4/4)
Gameplay (4/4)
Multiplatform (1/1)
Open Source (1/1)
Total (10/10)
And it's still getting better.